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A spring operating mechanism specifically designed for the usage requirements of the circuit breaker unit in a 11/24kV gas - filled ring - main unit cabinet.
■ Equipped with a complete rigid interlocking device, offering high reliability.
■ Highly adaptable. It can be connected just by adjusting the position of the welded studs on the user's gas tank.
■ Its technical parameters are perfectly matched with the circuit breaker switch.
■ The electric operation control module is placed in the front, facilitating maintenance.
■ The electric operation control module reserves a secondary plug - in interface, making it convenient for the secondary wiring of the mechanism.
■ Features a reclosing function, with the rated operating sequence being O - 0.3s - CO - 180s - CO.
Product Overview
Based on long - term operation statistics and analysis by the power department, among various failure causes of medium - and high - voltage switchgear, in different regions, different switch types, and different voltage levels, failures caused by the operating mechanism account for a proportion of 30% - 70%. Therefore, the reliability of the operating mechanism has become an important indicator of the technical level of SF6 ring - network switchgear. The MGC series of switchgear adopts a spring operating mechanism proven by decades of operation experience in the switch industry, with stable performance. The operating mechanism of the MGC series of switchgear includes a mechanical module and an electric module. The electric module is composed of pre - connected wires and circuit boards, allowing for easy selection of electric upgrades for the manual operating mechanism, as well as replacement, repair, and maintenance of the circuit boards. It has the following characteristics:
■ Adopts a splint - type structure, with good stability, high reliability, and long service life.
■ Compact structure, high output transmission efficiency.
■ Small size, perfectly adapting to the miniaturization characteristics of SF6 gas - insulated switchgear.
■ High corrosion resistance. All parts of the operating mechanism have passed a 96 - hour salt spray test, ensuring the reliability of the product's operation under harsh conditions.
■ Easy to upgrade the manual mechanism, meeting the needs of different users.
■ The electric operation control module adopts an integrated modular design, with a reserved secondary interface, facilitating secondary wiring of the mechanism. The control unit is placed in the front, facilitating maintenance.
■ A complete rigid interlocking device, safe and reliable, minimizing the possibility of misoperation.
■ Well - matched with mainstream gas - insulated switchgear switches in the market.
Execution Standards
GB3804 - 2004 High - voltage alternating - current load switches for 3.6kV - 40.5kV
GB1984 - 2014 High - voltage alternating - current circuit - breakers
GB16926 - 2009 High - voltage alternating - current load - switch - fuse combinations
GB1985 - 2014 High - voltage alternating - current disconnectors and earthing switches
Technical Parameters
Mechanical life | 20000次 |
Operating work | 85J |
Itinerary/Output Turn | 90° |
Energy storage travel switch | Standard configuration: 2 normally open and 2 normally closed. It can be configured as 3 normally open and 3 normally closed according to requirements. |
Auxiliary switch | Standard configuration: 6 normally open and 6 normally closed |
Operating voltage (motor) | DC220V/110V/48V/24V AC220V/110V |
Overall dimensions and installation cutouts
